fluorine
Instance URI: http://resource.geosciml.org/classifier/cgi/commodity-code/fluorine
Within scheme: South Australian Commodity Codes
Fluorine is an extremely reactive and poisonous chemical element with atomic number 9. The lightest halogen and most electronegative element, it exists as a pale yellow diatomic gas at standard conditions. Almost all other elements, including some noble gases, form compounds with fluorine.